computer freeze

my computer will freeze during running of screensaver. i run windows me but had the same trouble with win98 s.e. i have reinstalled my video drivers and thought it had helped but i now get the an exception 03 has occured at 0028:coo11803 in vxd— it may be possible to continue normally. it will start by hitting the space bar. i have reinstalled windows me without formating the hard drive. any help will be appreciated. thanks! harold at harold_solberg_ 2000@yahoo.com